| 单词 | quill-bit |
| 释义 | > as lemmasquill-bit quill-bit n. now rare a hollow drill bit used for boring into wood, the sawdust being collected inside the shaft. ΚΠ 1846 C. Holtzapffel Turning & Mech. Manip. II. 539 Fig. 452 is known as the shell-bit, and also as the gouge-bit, or quill-bit, it is sharpened at the end like a gouge, and when revolved it shears the fibres round the margin of the hole and removes the wood almost as a solid core. 1854 C. Tomlinson Cycl. Useful Arts (1862) I. 91/2 The shell-bit,..also called the gouge-bit and quill-bit. 1929 H. C. Mercer Anc. Carpenters' Tools 207 (caption) The ‘gouge’ bit, also called ‘quill bit’, or ‘shell bit’, an open-sided cylinder, sharpened like a carpenter's gouge, but not spooned at the base. 1956 C. Aldred in C. Singer et al. Hist. Technol. II. vii. 231 Other scoop-drills like the modern quill-bit or spoon-bit come from Roman sites. < as lemmas |
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